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Browse Prior Art Database

Assembling LC Injection Process and Equipments

IP.com Disclosure Number: IPCOM000123065D
Original Publication Date: 1998-May-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Odahara, S: AUTHOR

Abstract

New methods and equipments are disclosed that LC (Liquid Crystal) is assembled in a cell in atmospheric condition. The ordinary methods of LC injection to a cell are as follows. STEP1: Attach an array substrate and a color filter substrate by circumferential adhesive. Part of the circumferential adhesive is open as fill port. STEP2: Vacuum air from the cell in a chamber. STEP3: Inject LC from the fill port.

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Assembling LC Injection Process and Equipments

   New methods and equipments are disclosed that LC (Liquid
Crystal) is assembled in a cell in atmospheric condition.  The
ordinary methods of LC injection to a cell are as follows.
  STEP1: Attach an array substrate and a color filter substrate
          by circumferential adhesive.  Part of the circumferential
          adhesive is open as fill port.
  STEP2: Vacuum air from the cell in a chamber.
  STEP3: Inject LC from the fill port.

   The above STEP2 and STEP3 take many hours and they also
need the vacuum processes which cost much.  Therefore, new methods to
fill LC into a cell even in atmospheric condition by very short time
is invented.  The invented methods are as follows.
  STEP1: Coat LC on a substrate (array or color filter) by curtain
          coat equipment like a thin film (See Fig. 1).
  STEP2: One of the two substrates is bent by the deadweight or
          by pressure (See Fig. 2).
  STEP3: Attach the two substrates from the center of the
          substrate in order to eliminate air in the cell.
          Rollers can also be used to help attaching the two
          substrates (See Fig. 3).
  STEP4: Fix the two substrates by circumferential adhesive.
          The circumferential adhesive is hardened by light
          or heat (See Fig. 4).